Darning and embroidery attachment

ABSTRACT

A unitary molded darning and embroidery attachment for a sewing machine. A plastic clamping member suitable for attachment to a sewing machine presser bar, and a plastic darning and embroidery member, including a striker arm acted on by an endwise reciprocating needle bar of a sewing machine over a portion of its endwise reciprocation, are joined by a resilient member integrally molded with the clamping member and darning member. The motion imparted to a darning foot portion of the darning member by the action of the needle bar on the striker arm, which is utilized to lift the darning foot from the work material in order to allow the work fabric to be moved, is effectively isolated from the clamping member and the presser bar by the integrally molded resilient member.

United States Patent [111 3,872,811 Weber Mar. 25, 1975 DARNING ANDEMBROIDERY Primary E.\'aminer-H. Hampton Hunter ATTACHMENT Attorney,Agent, or Firm-Marshall J. Breen; Edward [75] Inventor: Karl Weber,Leopoldshafen, Robert Smlth Germany 57 ABSTRACT [73] Asslgnee:ESChbOm/TS A unitary molded darning and embroidery attachmentFrankfurtAneet Germany for a sewing machine. A plastic clamping member22 Filed; S 19 1974 Suitable for attachment to a sewing machine presserbar, and a plastic darning and embroidery member, [2]] Appl. No.:507,325 including a striker arm acted on by an endwise reciprocatingneedle bar of a sewing machine over a por- 52 us. Cl. 112/236 tion Ofits endwise reciprocation, are joined y a resil- 51 Int. Cl. D05b 29/00,D050 9/02 iem member integrally molded with the clamping [58] Field ofSearch 112/236, 235, 240, 60, member and daming member- The motionimparted 1 2 1 7 121 151 to adarning foot portion of the darning memberby the action of the needle bar on the striker arm, which 5 ReferencesCited is utilized to lift the darning foot from the work mate- 7 UNITEDSTATES PATENTS rial in order to allow the work fabric to be moved, iseffectively isolated from the clamping member and the presser bar by theintegrally moldled resilient member.

2 Claims, 4 Drawing Figures 1 DARNING AND EMBROIDERY ATTACHMENTBACKGROUND OF THE INVENTION SUMMARY OF THE INVENTION The inventionsubject of this patent is a darning and embroidery presser foot which isextremely simple, of rugged construction and low in cost due both to thematerial used and the method of manufacture. Major portions of theinvention are formed of plastic material which are molded in oneoperation on the extremities of a stamped and hardened metallic springmaterial to form a strong, one piece attachment not readily susceptibleto damage or loss of any component part.

BRIEF DESCRIPTION OF DRAWINGS For a better understanding of theinvention and the advantages thereof, reference may be had to theattached specification and accompanying drawings wherein:

FIG. 1 is a side view ofa darning and embroidery foot embodying thepresent invention partially in section to illustrate detail,

FIG. 2 is a view in plan of the foot shown in FIG. 1,

FIG. 3 is a left side elevational view of a portion of a head of asewing machine equipped with the darning and embroidery foot shown inFIG. I with the sewing needle shown in the down position, and

FIG. 4 is a right side elevational view of a portion of a head of asewing machine with the sewing needle shown in the up position toindicate the effect of the position of the needle clamp on the darningand embroidery foot.

Referring to FIG. I is shown a darning and embroidery foot having aclamping member 11 of plastic material, a darning member 12 also ofplastic material, joined by a curved resilient beam 13.

The darning member 12 has at the bottom end thereof a darning foot 15having a large opening 18 therein. The darning foot 15 is joined by aribbed plastic section 16 to a forwardly extending striker arm 17.

The clamping member 11 is molded with a flat surface 14 for abutmentwith the customary slabbed surface on a presser bar of family sewingmachines, and a slot 19 to accommodate the screw normally used to affixa presser foot to the presser bar.

The resilient beam 13 is fashioned on one end with a right angle bend 20and on both ends with apertures 21 designed to improve the retention ofthe resilient beam in the clamping member 11 and darning member 12. Inaddition, the resilient beam 13 is fashioned with an elongated opening23 in order to localize bending of the resilient member to an arearemoved from the plastic material because of the reduced cross sectionof the resilient beam adjacent the elongated opening. Thus the flexingof the resilient beam 13 has little or no detrimental effect on theretention of the beam in the clamping member 11 and darning member 12.

A partial elevational view of a sewing machine is shown in FIG. 3 and inFIG. 4 in which the darning and embroidery foot 10 is shown fastened toa presser bar 25, by screw 24, adjacent a needle bar 26 carrying asewing needle 27. In FIG. 3 the sewing needle 27 is shown in a positionextending through the opening 18 in the darning foot 15 and through aneedle hole 29 in a darning plate 30 of the sewing machine to cooperatewith a looptaker (not shown) in. the formation of a stitch. Referring toFIG. 4, an arm 31 of a needle clamp 32 affixing the needle 27 to theneedle bar 26, impinges on the striker arm 17 of the darning foot 15when the needle bar 26 reciprocates upwardly .and the sewing needle 27is out of the work fabric. The darning foot 15 is thereby elevated bythe needle bar so that the work fabric may be moved by the artisan. Theresilient beam flexes in the area of the elongated opening 24 toaccommodate the relative motion between the darning member 12 and theclamping member 11.

Having thus set forth the nature of the invention, what I claim is:

l. A unitary molded darning and embroidery attachment for a sewingmachine having a presser bar and an endwise reciprocating needle barcomprising:

a. a first plastic member including a plastic darning foot and meansintegral with said darning foot for engagement with and actuation bysaid needle bar of said sewing machine .over :a portion of its endwisereciprocation,

b. a second plastic member, said second plastic member having meansthereon for removably securing said second member to said presser bar ofsaid sewing machine, and

c. resilient means integrally molded with and joining said first andsecond plastic members whereby said first plastic member may partake oflimited motion relative to said second plastic member by reason of saidengagement with and actuation by said needle bar over a portion of itsendwise reciprocation.

2. A unitary molded darning and embroidery attachment as claimed inclaim 1 wherein said resilient means includes a metallic strip, saidstrip having a reduced member.

1. A unitary molded darning and embroidery attachment for a sewingmachine having a presser bar and an endwise reciprocating needle barcomprising: a. a first plastic member including a plastic darning footand means integral with said darning foot for engagement with andactuation by said needle bar of said sewing machine over a portion ofits endwise reciprocation, b. a second plastic member, said secondplastic member having means thereon for removably securing said secondmember to said presser bar of said sewing machine, and c. resilientmeans integrally molded with and joining said first and second plasticmembers whereby said first plastic member may partake of limited motionrelative to said second plastic member by reason of said engagement withand actuation by said needle bar over a portion of its endwisereciprocation.
 2. A unitary molded darning and embroidery attachment asclaimed in claim 1 wherein said resilient means includes a metallicstrip, said strip having a reduced cross section area between and spacedfrom said first plastic member and said second plastic member wherebyflexure of said resilient metallic strip is concentrated in said reducedcross section area and away from said first plastic member and saidsecond plastic member.